干涉SAR三维地形成像数据处理技术综述

干涉合成孔径雷达（InSAR，Interferometric Synthetic Aperture Radar）三维地形成像技术能够提供精确的高分辨率地形高度信息，它在上世纪后期发展非常迅速，目前仍是SAR技术领域的研究热点之一。本文给出了干涉SAR三维地形成像数据处理流程及主要步骤，综述了图像配准、相位展开、基线估计以及高度计算等干涉SAR数据处理步骤实现算法的发展概况，比较了各种算法的优劣，最后分析了干涉SAR三维地形成像数据处理所面临的技术难点，并对未来的研究重点作了展望。

A Survey of Interferometric SAR Topography Mapping Data Processing Technique

Interferometric synthetic aperture radar(SAR) is employed to supply terrain elevation with high precision and high resolution.It is one of the hot topics in the field of SAR in this century.The flowchart and main steps of interferometric SAR data processing are presented.Some research issues of the implementation of the main steps,such as SAR image registration,phase unwrapping,baseline estimation and elevation calculation,are summarized.In the end,the key problems and the prospect about interferometric SAR data processing are pointed out.